Dunno if its actually leather but TORELLI has some for $17:
http://www.torelli.com/parts/Tipounoparts.html
Theres also non leather brown tape like:
Salsa Gel Cork in Brown
SOMA Cork in Brown
Also found these from a Canadian Company called OCTTO:
Gel Cork
Microfiber tape:
And Check it FAUX WOOD foam!!!
http://www.octto.com